In the latest ERS Podcast, Dave Singh, Mona Bafadhel and Alberto Papi disucuss the evolving role of blood eosinophil counts in COPD. Blood eosinophil counts are an established biomarker in chronic obstructive pulmonary disease, helping to direct appropriate use of inhaled corticosteroids. Despite considerable evidence supporting the use of eosinophil counts in clinical practice, this is a controversial topic that has divided opinions. This podcast will cover the evidence and the controversies, and dissect new information concerning the role of eosinophils in chronic obstructive pulmonary disease.

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